EP1339703B1 - A process for the preparation of paclitaxel - Google Patents
A process for the preparation of paclitaxel Download PDFInfo
- Publication number
- EP1339703B1 EP1339703B1 EP01985349A EP01985349A EP1339703B1 EP 1339703 B1 EP1339703 B1 EP 1339703B1 EP 01985349 A EP01985349 A EP 01985349A EP 01985349 A EP01985349 A EP 01985349A EP 1339703 B1 EP1339703 B1 EP 1339703B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trichloroacetyl
- iii
- phenyl
- reaction
- mmol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229930012538 Paclitaxel Natural products 0.000 title claims abstract description 14
- 229960001592 paclitaxel Drugs 0.000 title claims abstract description 14
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- YWLXLRUDGLRYDR-ZHPRIASZSA-N 5beta,20-epoxy-1,7beta,10beta,13alpha-tetrahydroxy-9-oxotax-11-ene-2alpha,4alpha-diyl 4-acetate 2-benzoate Chemical compound O([C@H]1[C@H]2[C@@](C([C@H](O)C3=C(C)[C@@H](O)C[C@]1(O)C3(C)C)=O)(C)[C@@H](O)C[C@H]1OC[C@]12OC(=O)C)C(=O)C1=CC=CC=C1 YWLXLRUDGLRYDR-ZHPRIASZSA-N 0.000 claims abstract description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 claims description 24
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 17
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 15
- -1 t-butoxycarbonyl Chemical group 0.000 claims description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 13
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- UTQNKKSJPHTPBS-UHFFFAOYSA-N 2,2,2-trichloroethanone Chemical group ClC(Cl)(Cl)[C]=O UTQNKKSJPHTPBS-UHFFFAOYSA-N 0.000 claims description 10
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 8
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 7
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 6
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 6
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims description 6
- 150000002924 oxiranes Chemical class 0.000 claims description 5
- PVFOMCVHYWHZJE-UHFFFAOYSA-N trichloroacetyl chloride Chemical compound ClC(=O)C(Cl)(Cl)Cl PVFOMCVHYWHZJE-UHFFFAOYSA-N 0.000 claims description 5
- 150000001540 azides Chemical class 0.000 claims description 4
- 238000006480 benzoylation reaction Methods 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 125000006239 protecting group Chemical group 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001225 Ytterbium Chemical class 0.000 claims description 3
- 230000021736 acetylation Effects 0.000 claims description 3
- 238000006640 acetylation reaction Methods 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 3
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 3
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 3
- 238000010511 deprotection reaction Methods 0.000 claims description 3
- 230000032050 esterification Effects 0.000 claims description 3
- 238000005886 esterification reaction Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 3
- NOGFHTGYPKWWRX-UHFFFAOYSA-N 2,2,6,6-tetramethyloxan-4-one Chemical compound CC1(C)CC(=O)CC(C)(C)O1 NOGFHTGYPKWWRX-UHFFFAOYSA-N 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 125000000852 azido group Chemical group *N=[N+]=[N-] 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 239000007806 chemical reaction intermediate Substances 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 26
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 24
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 16
- 229910052681 coesite Inorganic materials 0.000 description 13
- 229910052906 cristobalite Inorganic materials 0.000 description 13
- 239000000377 silicon dioxide Substances 0.000 description 13
- 229910052682 stishovite Inorganic materials 0.000 description 13
- 238000003786 synthesis reaction Methods 0.000 description 13
- 229910052905 tridymite Inorganic materials 0.000 description 13
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 235000019439 ethyl acetate Nutrition 0.000 description 10
- 239000012074 organic phase Substances 0.000 description 8
- 238000005160 1H NMR spectroscopy Methods 0.000 description 7
- 238000003760 magnetic stirring Methods 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 5
- OVMSOCFBDVBLFW-VHLOTGQHSA-N 5beta,20-epoxy-1,7beta,13alpha-trihydroxy-9-oxotax-11-ene-2alpha,4alpha,10beta-triyl 4,10-diacetate 2-benzoate Chemical compound O([C@@H]1[C@@]2(C[C@H](O)C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)O)C(=O)C1=CC=CC=C1 OVMSOCFBDVBLFW-VHLOTGQHSA-N 0.000 description 5
- 238000003818 flash chromatography Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 0 CC(C)([C@@](C1)([C@](C([C@]2([C@@](C[C@@]3O*)OC2)OC(C)=O)[C@]3(C)C([C@@]2O*)=O)O*(c3ccccc3)=O)O)C2=C(C)C1O*([C@@]1O[C@@]1c1ccccc1)=O Chemical compound CC(C)([C@@](C1)([C@](C([C@]2([C@@](C[C@@]3O*)OC2)OC(C)=O)[C@]3(C)C([C@@]2O*)=O)O*(c3ccccc3)=O)O)C2=C(C)C1O*([C@@]1O[C@@]1c1ccccc1)=O 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- ADFXKUOMJKEIND-UHFFFAOYSA-N 1,3-dicyclohexylurea Chemical compound C1CCCCC1NC(=O)NC1CCCCC1 ADFXKUOMJKEIND-UHFFFAOYSA-N 0.000 description 3
- DLACRDONFBNRSP-KWIOUIIFSA-N 3'-N-debenzoyltaxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](N)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 DLACRDONFBNRSP-KWIOUIIFSA-N 0.000 description 3
- 230000008034 disappearance Effects 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- 239000012047 saturated solution Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- OKSZFAMAFLHYNJ-CXRLMVSZSA-N (2r,3s)-3-benzamido-2-(1-ethoxyethoxy)-3-phenylpropanoic acid Chemical compound N([C@H]([C@@H](OC(C)OCC)C(O)=O)C=1C=CC=CC=1)C(=O)C1=CC=CC=C1 OKSZFAMAFLHYNJ-CXRLMVSZSA-N 0.000 description 1
- LJCZNYWLQZZIOS-UHFFFAOYSA-N 2,2,2-trichlorethoxycarbonyl chloride Chemical compound ClC(=O)OCC(Cl)(Cl)Cl LJCZNYWLQZZIOS-UHFFFAOYSA-N 0.000 description 1
- 229910004664 Cerium(III) chloride Inorganic materials 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 1
- XMIIGOLPHOKFCH-UHFFFAOYSA-N OC(CCc1ccccc1)=O Chemical compound OC(CCc1ccccc1)=O XMIIGOLPHOKFCH-UHFFFAOYSA-N 0.000 description 1
- 241001116498 Taxus baccata Species 0.000 description 1
- 241000202349 Taxus brevifolia Species 0.000 description 1
- 235000009065 Taxus cuspidata Nutrition 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000004665 trialkylsilyl group Chemical group 0.000 description 1
- 150000003952 β-lactams Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D305/00—Heterocyclic compounds containing four-membered rings having one oxygen atom as the only ring hetero atoms
- C07D305/14—Heterocyclic compounds containing four-membered rings having one oxygen atom as the only ring hetero atoms condensed with carbocyclic rings or ring systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to a process for the preparation of Paclitaxel.
- Paclitaxel is a molecule of natural origin having wide spectrum antitumor activity, with the following structural formula:
- the compound first recovered from Taxus brevifolia bark and from other natural sources, can be prepared semi-synthetically according to a number of procedures described in both scientific and patent literature.
- US-4,924,011 discloses the semi-synthesis of paclitaxel using 10-deacetylbaccatine III protected at the C-7 hydroxyl with a trialkylsilyl group and subsequently acetylated at C-10.
- the resulting intermediate is reacted with (2R,3S)-N-benzoyl-2-O-(1-ethoxyethyl)-3-phenyl-isoserine and the resulting product is deprotected to give paclitaxel.
- WO-93/06094 discloses the preparation of paclitaxel by reacting a ⁇ -lactam precursor with 7-O-triethylsilyl-baccatine III, followed by mild acid hydrolysis.
- paclitaxel is prepared starting from 10-deacetylbaccatine III esterified at C-7 with a 2,2,2-trichloroethoxycarbonyl group (TROC).
- CONTROC 2,2,2-trichloroethoxycarbonyl group
- paclitaxel semi-synthesis is to selectively protect the hydroxyls on the diterpen moiety (10-deacetylbaccatine III skeleton).
- the C-7 position is the most reactive and is therefore functionalized with groups which are easy to remove subsequently.
- the most commonly used group is triethylsilyl (TES), which is stable under the conditions used for the esterification of the other hydroxyls involved in the synthesis, and provides about 85% conversion yield. Approximately 85% yields are obtained when an acetyl group is subsequently introduced at the C-10 position.
- TES triethylsilyl
- the process according to the invention comprises the following steps:
- the starting product is 10-deacetyl baccatine III (10-DAB III), which is extracted from the leaves of Taxus baccata.
- 10-DAB III is quantitatively esterified at the C-7 and C-10 hydroxyls.
- 10-DAB III is reacted with trichloroacetyl chloride in methylene chloride in the presence of triethylamine and of catalytic amounts of 4-dimethylaminopyridine (DMAP).
- DMAP 4-dimethylaminopyridine
- first 10-DAB III is selectively acetylated with acetic anhydride in the presence of cerium, scandium, ytterbium salts, preferably CeC13.7H20.
- the resulting baccatine III is subsequently protected at C-7 with a t-butoxycarbonyl or trichloroacetyl group.
- the first can be introduced by reacting baccatine III with t-butoxypyrocarbonate in the presence of DMAP and ethyldiisopropylamine or, alternatively, following the procedure described in US 5,917,062.
- the trichloracetyl group can be introduced at position 7 by reaction with trichloroacetyl chloride in pyridine.
- the hydroxyl at position 13 is esterified with 3-phenyl-2-epoxypropionic acid, preferably with its ammonium salt in toluene in the presence of dicyclohexylcarbodiimide, DMAP and p-toluenesulfonic acid, thereby obtaining (2R,3R)-3-phenyl-2,3-epoxy-propionic acid baccatine III ester.
- both protective groups R and R' are trichloroacetyl, they can be removed using the conditions and reagents described by Zheng et al., Tetrahedron Lett., 1995, 36, 2001, and by Datta et al., J. Org. Chem., 1995, 60, 761.
- the two trichloroacetyl groups are removed with two equivalents of ammonium hydroxide.
- the deprotected compound is selectively acetylated at position 10 with acetic anhydride in the presence of cerium, scandium or ytterbium salts, preferably CeCl 3 .7H2O.
- the resulting compound is reacted with NaN 3 in aqueous methanol in the presence of methyl formate, in the conditions reported in literature (Yamaguchi T., Tetrahedron Letters 39, 5575-78, 1998), to provide the corresponding azide.
- the azide is reduced to amine in the subsequent step (d).
- the reduction can be carried out with hydrogen on catalyst or with PPh 3 .
- the product obtained at the last step (e) is benzoylated at the amino group to give paclitaxel.
- Benzoylation can be carried out with benzoic anhydride either simultaneously to reduction or subsequently on the isolated reduced product, using stoichiometric amounts of benzoyl chloride in the presence of potassium carbonate.
- dicyclohexylcarbodiimide (DCC, 0.21 g, 1.00 mmol, 1.0 eq)
- 4-dimethylamino pyridine (DMAP, 0.084 g, 0.68 mmol, 0.66 eq)
- p -toluenesulfonic acid ( p -TSA, 0.17 g, 0.10 mmol, 0.1 eq) were added, in succession.
- the solution was then heated at 70°C under magnetic stirring and nitrogen flow. The progress of the reaction was controlled by TLC (SiO 2 , n -hexane/EtOAc, 3:2).
- the second spot, having R f 0.11, corresponds to 7-(TCA)- baccatine III.
- DCU precipitated dicylohexylurea
- the reaction solution after 46 h had yellow brown color with a white precipitate (unreacted NaN 3 ).
- the reaction was quenched after 46 h by addition of water, two further spots were observed, with R f 0.38 and 0.13 (unrecovered decomposition products).
- the precipitated milky white solid was filtered, washed with water and then with AcOEt. A diphasic mixture was obtained, both phases being clear. The two phases were separated. The aqueous phase was extracted three times with AcOEt and the combined organic phases were concentrated and dried over MgSO 4 . The mixture was filtered and the solvent was evaporated off, to obtain 0.335 g of a white-yellowish powder.
- dicyclohexylcarbodiimide (DCC, 0.224 g, 1.09 mmol, 1.0 eq), 4-dimethylaminopyridine (DMAP, 0.088 g, 0.72 mmol, 0.66 eq) and p -toluenesulfonic acid ( p -TSA, 0.19 g, 0.11 mmol, 0.1 eq) were added, in succession.
- the reaction was carried out in heterogeneous phase at 70°C under magnetic stirring and nitrogen flow. The progress of the reaction was checked by TLC (SiO 2 , n-hexane/EtOAc, 3:2).
- the mixture was cooled and the suspended solid was filtered.
- the dark yellow precipitate was washed with CH 2 Cl 2 : the residual white solid was DCU.
- the combined organic fractions were concentrated and the resulting solid was subjected to flash chromatography (SiO 2 , n-hexane/EtOAc, 3:2).
- the compound has the same spectroscopic characteristics as the compound obtained in Example III.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Epoxy Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Plural Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200130104T SI1339703T1 (en) | 2000-12-06 | 2001-12-03 | A process for the preparation of paclitaxel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20002654 | 2000-12-06 | ||
| IT2000MI002654A IT1319682B1 (it) | 2000-12-06 | 2000-12-06 | Procedimento di sintesi del paclitaxel. |
| PCT/EP2001/014084 WO2002046177A1 (en) | 2000-12-06 | 2001-12-03 | A process for the preparation of paclitaxel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1339703A1 EP1339703A1 (en) | 2003-09-03 |
| EP1339703B1 true EP1339703B1 (en) | 2004-05-26 |
Family
ID=11446197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01985349A Expired - Lifetime EP1339703B1 (en) | 2000-12-06 | 2001-12-03 | A process for the preparation of paclitaxel |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US6768012B2 (cs) |
| EP (1) | EP1339703B1 (cs) |
| JP (1) | JP2004515497A (cs) |
| KR (1) | KR100846891B1 (cs) |
| CN (1) | CN1286828C (cs) |
| AT (1) | ATE267820T1 (cs) |
| AU (2) | AU2002234535B2 (cs) |
| CA (1) | CA2430814C (cs) |
| CZ (1) | CZ300024B6 (cs) |
| DE (1) | DE60103560T2 (cs) |
| DK (1) | DK1339703T3 (cs) |
| ES (1) | ES2221656T3 (cs) |
| HU (1) | HU229373B1 (cs) |
| IL (2) | IL156331A0 (cs) |
| IT (1) | IT1319682B1 (cs) |
| NO (1) | NO328505B1 (cs) |
| PL (1) | PL195121B1 (cs) |
| PT (1) | PT1339703E (cs) |
| RU (1) | RU2276147C2 (cs) |
| SK (1) | SK286616B6 (cs) |
| TR (1) | TR200401435T4 (cs) |
| WO (1) | WO2002046177A1 (cs) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1319682B1 (it) * | 2000-12-06 | 2003-10-23 | Indena Spa | Procedimento di sintesi del paclitaxel. |
| ITMI20012185A1 (it) * | 2001-10-19 | 2003-04-19 | Indena Spa | Procedimento per la preparazione della 14beta-idrossi-baccatina iii-1,14-carbonato |
| WO2004068930A2 (en) * | 2003-02-04 | 2004-08-19 | Natural Pharmaceuticals Inc. | Method and composition for preparing a compound using a benzolating agent essentially free of ring chlorination |
| CN1303077C (zh) | 2004-01-16 | 2007-03-07 | 桂林晖昂生化药业有限责任公司 | 合成紫杉烷的制备工艺 |
| ITMI20050614A1 (it) * | 2005-04-12 | 2006-10-13 | Indena Spa | Processo per la purificazione della 10-deacetilbaccatina iii dalla 10-deacetil-2-debenzoil-2-pentenoilbaccatina iii |
| DE602006021546D1 (de) * | 2006-05-12 | 2011-06-09 | Indena Spa | Verfahren zur Herstellung eines Taxanderivats |
| CN102887876B (zh) * | 2012-02-15 | 2015-11-25 | 浙江大学宁波理工学院 | 一种改进的多西紫杉醇的半合成方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696460B1 (fr) * | 1992-10-05 | 1994-11-25 | Rhone Poulenc Rorer Sa | Procédé de préparation de dérivés du taxane. |
| US5380751A (en) * | 1992-12-04 | 1995-01-10 | Bristol-Myers Squibb Company | 6,7-modified paclitaxels |
| US7288665B1 (en) * | 1997-08-18 | 2007-10-30 | Florida State University | Process for selective derivatization of taxanes |
| US5917062A (en) * | 1997-11-21 | 1999-06-29 | Indena S.P.A | Intermediates and methods useful in the semisynthesis of paclitaxel and analogs |
| US6020507A (en) * | 1998-03-02 | 2000-02-01 | Bristol-Myers Squibb Company | Synthesis of paclitaxel from baccatin III by protection of the 7-hydroxyl of baccatin III using a strong base and an electrophile |
| IT1319682B1 (it) * | 2000-12-06 | 2003-10-23 | Indena Spa | Procedimento di sintesi del paclitaxel. |
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2000
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- 2001-12-03 AU AU2002234535A patent/AU2002234535B2/en not_active Ceased
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- 2001-12-03 HU HU0500615A patent/HU229373B1/hu not_active IP Right Cessation
- 2001-12-03 JP JP2002547916A patent/JP2004515497A/ja active Pending
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- 2001-12-03 DE DE60103560T patent/DE60103560T2/de not_active Expired - Lifetime
- 2001-12-03 US US10/433,601 patent/US6768012B2/en not_active Expired - Lifetime
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- 2001-12-03 SK SK697-2003A patent/SK286616B6/sk not_active IP Right Cessation
- 2001-12-03 CN CNB018200745A patent/CN1286828C/zh not_active Expired - Fee Related
- 2001-12-03 PT PT01985349T patent/PT1339703E/pt unknown
- 2001-12-03 ES ES01985349T patent/ES2221656T3/es not_active Expired - Lifetime
- 2001-12-03 CZ CZ20031534A patent/CZ300024B6/cs not_active IP Right Cessation
- 2001-12-03 IL IL15633101A patent/IL156331A0/xx active IP Right Grant
- 2001-12-03 AT AT01985349T patent/ATE267820T1/de active
- 2001-12-03 AU AU3453502A patent/AU3453502A/xx active Pending
- 2001-12-03 KR KR1020037007262A patent/KR100846891B1/ko not_active Expired - Fee Related
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